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WAEC - Chemistry (2004 - No. 34)
What is the change in the oxidation number of 1
-
in the reaction represented by the following equation? 51
-1
(aq)
+ 6H
+
(aq)
+ 1O
-
3(aq)
→ 31
2(g)
+ 3H
2
O
(l)
-5 to -3
-1 to 0
+ 5 to + 0
-1 to + 2
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